Accessibility: Fix color enhancer disable option

ui/accessibility/extensions/colorenhancer/res/cvd.css

Index: ui/accessibility/extensions/colorenhancer/res/cvd.css
diff --git a/ui/accessibility/extensions/colorenhancer/res/cvd.css b/ui/accessibility/extensions/colorenhancer/res/cvd.css
index 5856e02ce316ffed98b6121eea58c26cac8a922d..e1a6f17357da3c64a93a0b96b6c362f3f64f51b7 100644
--- a/ui/accessibility/extensions/colorenhancer/res/cvd.css
+++ b/ui/accessibility/extensions/colorenhancer/res/cvd.css
@@ -2,10 +2,10 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
-html.filter0 {
+html[cvd="0"] {
   -webkit-filter: url('#cvd_extension_0');
 }
 
-html.filter1 {
+html[cvd="1"] {
   -webkit-filter: url('#cvd_extension_1');
 }